A group of Taliban insurgents launched an attack on NATO bases in eastern Afghanistan's Khost province early on Saturday, police said.

"A group of Taliban terrorists raided two bases of NATO-led troops in Khost province early Saturday but all the attackers were killed," provincial police chief Abdul Hakim Ishaqzai told Xinhua.

He also added that the militants attacked NATO-led forces base in Sahra Bagh and old airfield at 05:00 a.m. local time with suicide bombers rockets and small arms.

Ishaqzai further said that all the insurgents were killed and the situation is under full control at the moment.

However, he could not give the exact numbers of the attackers killed during the counter attack.

Earlier he put the number of those insurgents killed in counter attack as high as six.

Meanwhile, NATO-led forces in a statement released here said that Afghan and coalition forces killed 13 Haqqani network insurgents, four of them were wearing suicide vests, as they attempted to attack Salerno base Saturday morning.

"No Afghan or coalition forces were killed in the attack," the statement said.

Haqqani network is the military wing of Taliban outfit operating in the east, southeast as well as in Afghan capital Kabul.

Previously, press department of NATO-led troops in southeast Afghanistan put the number of insurgents killed in counter attack as high as 11. It also said that five more attackers were detained and two soldiers sustained injuries.

Meanwhile, Taliban spokesman Zabihullah Mujahid claimed of responsibility and in talks with media via telephone from undisclosed location said 20 suicide bombers stormed NATO bases in Khost province.

Mujahid also claimed that the militants shot down a helicopter in old airfield.

He also said huge casualties was inflicted on the troops but failed to give a figure.

Taliban militants have vowed to intensify their attacks mostly in the shape of suicide and roadside bombings against Afghan and NATO-led troops stationed in Afghanistan.